Anyone got a M10 x 1.5 male brake pipe union?

[RicksAlfas]

I've had a helicoil fitted in an old caliper and it's thread is M10 x 1.5 which is proving somewhat elusive. I need a male brake pipe union to fit. Apparently they were used on Fiats/Lancias/Ladas of 1970s vintage. It's a very coarse thread so a bit of an odd one. Any help would be gratefully received!